Brother asks, “What’s a metaphor?”
At this age aren’t they supposed to be wondering why the sky is blue?
P.S Though I’d love to claim that his question came from some high falutin’ source it actually stemmed from a quote in this movie.
P.P. S A metaphor is “a figure of speech in which an expression is used to refer to something that it does not literally denote in order to suggest a similarity.” Not that that definition even remotely helps one explain the concept to a four year old.